Subject: Base metal 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Basic carpentry 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Fruit colors 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Forest colors 17 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Threaded pipe 25 general knowledge quiz questions. It should take around 5 minutes to complete all the questions.

Subject: Pipe snake 16 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Cap fitting 16 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Pipe Fitting 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Elbow fitting 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Tee fitting 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Coupling fitting 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Union fitting 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Nipple fitting 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Pipe valve 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Black pipe 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Pressure pipe 20 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.